This unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure. 
 
Features: 
Ideal size for all-day hydration 
Fits most backcountry water filters 
TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours -
Durable 18/8 Pro-Grade Stainless Steel construction 
BPA-Free and Phthalate-Free 
Dishwasher safe 
Compatible with the Wide Mouth Flex Sip Lid and Wide Mouth Straw Lid